<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"> <style>
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	</style></head><body><pre><span class='line'>  1</span> <span class="COMM">/**
<span class='line'>  2</span> 	@class
<span class='line'>  3</span> 
<span class='line'>  4</span> 	DelayedTask will execute a function after a delay.  Every time delay is called, any pending execution
<span class='line'>  5</span> 	will be canceled.
<span class='line'>  6</span> */</span><span class="WHIT">
<span class='line'>  7</span> </span><span class="NAME">rio.DelayedTask</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">Class.create</span><span class="PUNC">(</span><span class="COMM">/** @scope rio.DelayedTask.prototype */</span><span class="PUNC">{</span><span class="WHIT">
<span class='line'>  8</span> 	</span><span class="COMM">/** @constructor */</span><span class="WHIT">
<span class='line'>  9</span> 	</span><span class="NAME">initialize</span><span class="PUNC">:</span><span class="WHIT"> </span><span class="KEYW">function</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'> 10</span> 	    </span><span class="NAME">this.id</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="KEYW">null</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 11</span> 		</span><span class="NAME">this.start</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="KEYW">null</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 12</span> 		</span><span class="NAME">this.delayLength</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="KEYW">null</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 13</span> 		</span><span class="NAME">this.task</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="KEYW">null</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 14</span> 		</span><span class="NAME">this.args</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="PUNC">[</span><span class="PUNC">]</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 15</span> 		</span><span class="NAME">this.scope</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="KEYW">this</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 16</span> 	</span><span class="PUNC">}</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'> 17</span> 
<span class='line'> 18</span> 	</span><span class="COMM">/** @private */</span><span class="WHIT">
<span class='line'> 19</span>     </span><span class="NAME">timeout</span><span class="PUNC">:</span><span class="WHIT"> </span><span class="KEYW">function</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'> 20</span>         </span><span class="KEYW">if</span><span class="WHIT"> </span><span class="PUNC">(</span><span class="KEYW">new</span><span class="WHIT"> </span><span class="NAME">Date</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="PUNC">.</span><span class="NAME">getTime</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">-</span><span class="WHIT"> </span><span class="NAME">this.start</span><span class="WHIT"> </span><span class="PUNC">>=</span><span class="WHIT"> </span><span class="NAME">this.delayLength</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'> 21</span>             </span><span class="NAME">clearInterval</span><span class="PUNC">(</span><span class="NAME">this.id</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 22</span>             </span><span class="NAME">this.id</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="KEYW">null</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 23</span>             </span><span class="NAME">this.task.apply</span><span class="PUNC">(</span><span class="NAME">this.scope</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">this.args</span><span class="WHIT"> </span><span class="PUNC">||</span><span class="WHIT"> </span><span class="PUNC">[</span><span class="PUNC">]</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 24</span>         </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'> 25</span>     </span><span class="PUNC">}</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'> 26</span> 
<span class='line'> 27</span>     </span><span class="COMM">/**
<span class='line'> 28</span> 		Executes the passed in task after a delay.  This will also cancel any pending tasks.
<span class='line'> 29</span> 
<span class='line'> 30</span> 		@param {Number} delayLength The delay in milliseconds
<span class='line'> 31</span> 		@param {Function} task Task to execute after the delay
<span class='line'> 32</span> 		@param {Object} scope (optional) The scope in which to execute the task
<span class='line'> 33</span> 		@param {Array} args (optional) Arguments to pass into the task function 
<span class='line'> 34</span>      */</span><span class="WHIT">
<span class='line'> 35</span>     </span><span class="NAME">delay</span><span class="PUNC">:</span><span class="WHIT"> </span><span class="KEYW">function</span><span class="PUNC">(</span><span class="NAME">delayLength</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">task</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">scope</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">args</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'> 36</span>         </span><span class="KEYW">if</span><span class="WHIT"> </span><span class="PUNC">(</span><span class="NAME">this.id</span><span class="WHIT"> </span><span class="PUNC">&&</span><span class="WHIT"> </span><span class="NAME">delayLength</span><span class="WHIT"> </span><span class="PUNC">!=</span><span class="WHIT"> </span><span class="NAME">this.delayLength</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'> 37</span>             </span><span class="NAME">this.cancel</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 38</span>         </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'> 39</span>         
<span class='line'> 40</span>         </span><span class="NAME">this.delayLength</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">delayLength</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 41</span>         </span><span class="NAME">this.task</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">task</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 42</span>         </span><span class="NAME">this.scope</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">scope</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 43</span>         </span><span class="NAME">this.args</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">args</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 44</span>         
<span class='line'> 45</span>         </span><span class="NAME">this.start</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="KEYW">new</span><span class="WHIT"> </span><span class="NAME">Date</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="PUNC">.</span><span class="NAME">getTime</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 46</span>         
<span class='line'> 47</span>         </span><span class="KEYW">if</span><span class="WHIT"> </span><span class="PUNC">(</span><span class="PUNC">!</span><span class="NAME">this.id</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'> 48</span>             </span><span class="NAME">this.id</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">setInterval</span><span class="PUNC">(</span><span class="NAME">this.timeout.bind</span><span class="PUNC">(</span><span class="KEYW">this</span><span class="PUNC">)</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">this.delayLength</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 49</span>         </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'> 50</span>     </span><span class="PUNC">}</span><span class="PUNC">,</span><span class="WHIT">
<span class='line'> 51</span> 
<span class='line'> 52</span>     </span><span class="COMM">/**
<span class='line'> 53</span>      * Cancels the queued task
<span class='line'> 54</span>      */</span><span class="WHIT">
<span class='line'> 55</span>     </span><span class="NAME">cancel</span><span class="PUNC">:</span><span class="WHIT"> </span><span class="KEYW">function</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'> 56</span>         </span><span class="KEYW">if</span><span class="WHIT"> </span><span class="PUNC">(</span><span class="NAME">this.id</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
<span class='line'> 57</span>             </span><span class="NAME">clearInterval</span><span class="PUNC">(</span><span class="NAME">this.id</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 58</span>             </span><span class="NAME">this.id</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="KEYW">null</span><span class="PUNC">;</span><span class="WHIT">
<span class='line'> 59</span>         </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'> 60</span>     </span><span class="PUNC">}</span><span class="WHIT">
<span class='line'> 61</span> </span><span class="PUNC">}</span><span class="PUNC">)</span><span class="PUNC">;</span></pre></body></html>